a**t
发帖数: 402 | 1 所谓尼康黄，索尼黄，室内灯光黄都是照片白平衡没有调好。下面的用lightroom调照
片白平衡的教程很有用，专治各种白平衡漂移。以前在水族馆拍的照片，因为室内照明
的问题，照片都是蓝蓝的一片，调一下白平衡，所有的色彩就恢复了。
注：照片里最好有白色的东西做参照物，比如衣服，饰物，即使是很少的一点点。
https://digital-photography-school.com/adjusting-white-balance-in-lightroom/
Adjusting White Balance in Lightroom
A Post By: Helen Bradley
Lightroom white balance opener
Lightroom has a set of tools that you can use to adjust white balance in
your images. To see these at work open an image in the Develop module. At
the top of your Basic panel are the white balance adjustment tools.
White Balance Options
The dropdown list will show you some options for adjusting white balance –
what is shown here will vary depending on how your images are captured. If
you capture in raw then the white balance dropdown list will contain the
same options as you have on your camera for setting white balance. If you’
re capturing jpg images then there are fewer options – As Shot, Auto and
Custom.
Lightroom white balance 1
On the left are the options for a raw image and on the right those for a
jpeg image.
The Temperature and Tint sliders also have different units of measure
depending on whether you’re working with jpgs or raw images. For jpg images
both the sliders range from +100 to -100. If you’re working on a raw image
then the Temperature slider shows degrees Kelvin from 2000 – 50,000 and
the Tint slider ranges between + 150 and – 150.
Kelvin is a measurement of the color of light – daylight is around 5,500
degrees Kelvin. Lights we consider to be warm or pink/orange in color
including tungsten globes are around 3,000 degrees Kelvin and cool lights
which are blue in color such as overcast daylight are around 7,000 degrees
Kelvin and higher.
Adjust White Balance
To adjust the white balance in the selected image you can select an option
from the White Balance dropdown list to use to fix the image or you can use
it as a starting point and then fine tune the result.
You can also manually adjust the Temp slider to add warmth or remove it from
the image. Drag the sider to the left to add a blue tint to the image (to
cool it down), or to the right to add a yellow tint to it to warm the image.
Use the Tint slider to balance out any excess magenta or green in the image.
Drag towards the right to add magenta to the image cancelling out any green
tint and drag to the left to add a green tint cancelling out any unwanted
magenta.
White Balance Selector
You can also use the White Balance Selector to adjust white balance. You can
select the tool by clicking on it or press W.
Lightroom white balance 2
From the White Balance toolbar under the image you can select options that
make the White Balance tool easier to use. I suggest you deselect Auto
Dismiss as you can then click on the image in various places to attempt to
fix it. If you have Auto Dismiss enabled you’ll only be able to click once
before the selector is dismissed so, if that fix isn’t perfect then you’ll
need to select the tool again to attempt another fix. This is a cumbersome
way to work so I prefer to disable Auto Dismiss and put the tool away only
when I am done with it.
If you click the Show Loupe checkbox then you’ll see a 5 by 5 pixel grid
beside the mouse cursor. The center point in the grid is the pixel that you
are currently targeting and which will be used to adjust the image if you
click. This grid makes it easier for you to pick the correct point in the
image to adjust to. The scale itself can be increased or decreased using the
Scale option on the toolbar.
At the bottom of the loupe itself are the RGB percentage values of the pixel
under the cursor. These values tell you if the pixel is neutral or not. If
it is neutral then the percentages of R, G and B will all be equal – if
they are not equal then there is color in that pixel.
Lightroom white balance 3
To balance the image using the White Balance selector, click on a pixel that
should be neutral grey – not white or black. When you do so, Lightroom
will adjust the image so that the selected pixel is a neutral grey and, as a
result, all the color in the image will change. At the same time Lightroom
adds an entry to the image History for that adjustment. This means that you
can wind back the history to return to an earlier white balance fix, if
desired.
Lightroom white balance 4
You should be aware that adjusting image white balance is to an extent a
subjective assessment – so there is no one value that is “correct”. There
are, instead, a myriad of different results that can be achieved so look
for one that is it pleasing to you. In most cases viewers prefer to see some
warmth in photos as they are more pleasing to the eye if they are warmer
rather than cool.
I find that a good approach to take is to experiment with the white balance
selector to see the effect on the image by selecting different pixels to
adjust to. Then choose the most aesthetically pleasing result. | D***3
发帖数: 12712 | 2 有人只喜欢直出，没时间后期............ | a**t
发帖数: 402 | 3 其实用lightroom调一下就几分钟，而且照片也同时做了备份，尤其是RAW文件的备份，
就好象是保存了底片。
很多东西没有办法在手机上调的，比如纠正镜头的畸变。
【在 D***3 的大作中提到】
: 有人只喜欢直出，没时间后期............
| h**y
发帖数: 383 | 4 麻烦，直接用机器拍一张白卡，导入capture one弄个icc文件套用在所有照片上，马上
校正所有白平衡不准的问题。 |
|
